Last weekend, Marussia driver Jules Bianchi was seriously injured when his car left the course at the Japanese Grand Prix and collided with an emergency vehicle (a front loader) while it was recovering Adrian Sutil’s Sauber. As you can see from the fan video below, the impact was horrendous and left Bianchi in need of emergency surgery. Be cautioned: the video is dramatic.

While the video doesn’t give us the full picture of what was going on in the wider race, it brings up some hard questions. As Jacques Villeneuve and Niki Lauda have asked publicly, speaking with Autosport—why wasn’t there a safety car on the track after the Sutil crash? More importantly, while the flag worker in the tower above the wreck is seen early in the video waving a yellow flag, why does the worker wave a green flag before the impact while the recovery vehicle is still on the run-off area? His tower is technically after the Sutil incident, sure, but the switch to green would have been more safely done at a later station. And then there is the ongoing debate about how bad the weather was, and if and when the race should have been started at all.

As for Bianchi, specifics of his condition are few and far between. The BBC is reporting that he’s in “critical but stable” condition as he is treated in a Japanese facility. The FIA has started an investigation into the incident; we’ll report on its findings just as soon as they’re available.